evm5509_aic23_loopback.c

来自「dsp 5509a MMC 卡 ID号读取 12Mhzx16=192M」· C语言 代码 · 共 29 行

/*
 *  Copyright 2004 by Spectrum Digital Incorporated.
 *  All rights reserved. Property of Spectrum Digital Incorporated.
 */

/*
 *  ======== evm5509_aic23_loopback.c ========
 *  EVM5509_AIC23_loopback() implementation
 */
 
#include <evm5509.h>
#include <evm5509_aic23.h>

/*
 *  ======== EVM5509_AIC23_loopback ========
 *  Enable/disable codec loopback mode
 */
void EVM5509_AIC23_loopback(EVM5509_AIC23_CodecHandle hCodec, CSLBool mode)
{
    int regval;
    
    /* Set bypass bit if mode is true */
    regval = (mode) ? 0x8 : 0x0;
    
    /* Write to codec register */
    EVM5509_AIC23_rset(hCodec, EVM5509_AIC23_ANAPATH,
        (EVM5509_AIC23_rget(hCodec, EVM5509_AIC23_ANAPATH) & 0xfff7 | regval));
}